Table 6. 95% CI of seroprotection rates of influenza antibody after immunization between three batches of influenza vaccine.
| Age group | Subgroup | No. of subjects | Antibody seroprotection (H1N1) | Antibody seroprotection (H3N2) | Antibody seroprotection (B) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. | Percentage | 95%CI | No. | Percentage | 95%CI | No. | Percentage | 95%CI | |||
| ≥3 y | T1 | 622 | 566 | 91 | (–2.1%, 4.5%)1 | 578 | 92.9 | (–2.5%, 2.8%)1 | 619 | 99.5 | (–0.6%, 1.2%) 1 |
| T2 | 618 | 555 | 89.8 | (–2.4%, 3.8%)2 | 583 | 94.3 | (–2.1%, 3.5%)2 | 613 | 99.2 | - | |
| T3 | 612 | 561 | 91.7 | (–1.3%, 5.1%)3 | 573 | 93.6 | (–2.0%, 3.4%)3 | 609 | 99.5 | (–0.6%, 1.2%) 3 | |
1 95% CI when comparing the seroprotection rates of T1 and T2; 2, 95% CI when comparing the seroprotection rates of T1 and T3; 3, 95% CI when comparing the seroprotection rates of T2 and T3.